Who owns CIENA CORP?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CIEN from SEC Form 13F filings across 1,220 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 1,220 institutions disclosed 132.4M shares of CIENA CORP worth $70.26B — about 93.2% of shares outstanding; the largest disclosed holder is FMR LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
1,220
13F holders
$70.26B
value, 2026 filers
93.2%
of shares outstanding (132.4M sh)
274
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of CIEN's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 19.1M | $9.38B | 0.4% | 13.5% | -9.9% |
| 2 | BlackRock, Inc. | 12.7M | $6.24B | 0.1% | 9% | -4.9% |
| 3 | JPMORGAN CHASE & CO | 11.2M | $5.37B | 0.3% | 7.9% | +9.6% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 9.2M | $4.53B | 0.1% | 6.5% | +0.7% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.7M | $3.77B | 0.2% | 5.4% | +4.2% |
| 6 | STATE STREET CORP | 6.7M | $3.28B | 0.1% | 4.7% | +5.9% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | 4.1M | $2.00B | 0.2% | 2.9% | -22.3% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 3.4M | $1.65B | 0.1% | 2.4% | -17.1% |
| 9 | AMERICAN CENTURY COMPANIES INC | 1.9M | $908.4M | 0.4% | 1.3% | +245.6% |
| 10 | BANK OF AMERICA CORP /DE/ | 1.8M | $877.4M | 0.1% | 1.3% | -8.5% |
| 11 | Capital World Investors | 1.8M | $861.2M | 0.1% | 1.2% | +1.8% |
| 12 | Invesco Ltd. | 1.7M | $848.8M | 0.1% | 1.2% | +13.1% |
| 13 | NORGES BANKNEW | 1.7M | $835.5M | 0.1% | 1.2% | new |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.7M | $822.7M | 0.4% | 1.2% | +20.8% |
| 15 | MORGAN STANLEY | 1.6M | $801.9M | 0.0% | 1.2% | +4.7% |
| 16 | Nuveen, LLC | 1.4M | $682.6M | 0.2% | 1% | +64.8% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2M | $612.7M | 0.1% | 0.9% | -1.8% |
| 18 | NORTHERN TRUST CORP | 1.2M | $597.5M | 0.1% | 0.9% | +2.6% |
| 19 | DIMENSIONAL FUND ADVISORS LP | 1.2M | $565.6M | 0.1% | 0.8% | +0.6% |
| 20 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1.1M | $561.9M | 0.1% | 0.8% | +34.5% |
| 21 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.1M | $542.1M | 0.5% | 0.8% | +8.2% |
| 22 | AQR CAPITAL MANAGEMENT LLC | 1.1M | $507.2M | 0.2% | 0.7% | +7.7% |
| 23 | GOLDMAN SACHS GROUP INC | 946,611 | $464.4M | 0.0% | 0.7% | +22.4% |
| 24 | Legal & General Group Plc | 887,054 | $435.2M | 0.1% | 0.6% | +36.8% |
| 25 | Bank of New York Mellon Corp | 825,480 | $404.9M | 0.1% | 0.6% | -10.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.